发布于 2003-05-01 10:45:11
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main
LD SM0.1
MOVB 16#F8, SMB37 //Set control bits: count UP; enabled;
MOVD +0, SMD38 //Load CV
MOVD +1000000, SMD42 //Load PV
HDEF 0, 0
MOVB 250, SMB34
ATCH INT_0, 10 //Interrupt 250ms
INT_0
LD SM0.0
movd hc0 vd100
MOVB 16#C0, SMB37 //Set control bits: write current;
MOVD +0, SMD38 //CV = 0;
HSC 0
你监控VD100的值,看会不会有变化?